wsb's eric phillips reports now from atlanta. >> reporter: an 800-page-report details how according to investigators, a culture of fear and a conspiracy of silence infected atlanta public schools for a decade when it came to correcting crct test answers. here are a few of the findings. changing of answers was often done at weekend gatherings at so-called erasure parties. children were denied special educational assistance because their falsely reported scores were too high. and during testing teachers pointed to the correct answers while standing at the students' desks. >> total disappointment that the city isn't in better control of the schools and that our teachers and principals don't have more integrity. >> reporter: according to the report parks middle school had the most educators accused of cheating under the direction of then-principal christopher waller. the report says scores improved dramatically when waller arrived there. meanwhile, answers were allegedly being changed in 2006, '07, '08 and' 09, and that superintendent beverly hall knew or should have known about it. we wen